Leakproof organic working medium turbine generator set

Abstract

The invention provides a leakproof organic working medium turbine generator set which is composed of a turbine and a generator. A turbine shell and a motor shell are communicated. A turbine movable vane and a generator rotor share the same rotating shaft. Bearing lubricating and cooling flow paths are formed in the turbine shell and the motor shell respectively. Liquid working media divided after being pumped pass through the bearing lubricating and cooling flow paths to lubricate and cool bearings. The scheme that the turbine shell and the motor shell are communicated is adopted, shaft end sealing is not needed, and the working media of the set can be completely free of leakage. The first bearing lubricating and cooling flow path and the second bearing lubricating and cooling flow path used for lubricating the bearings are formed in the turbine shell and the motor shell respectively, the working media of the set are used for lubricating and cooling the bearings, accordingly, no traditional oil and grease cooling and lubricating system needs to be arranged, the problem that the normal work of the whole set is influenced after lubricating oil and grease are mixed with the working media is avoided, reliable sealing of the set is completely guaranteed, and leakage of the working media is avoided.

Description

【Technical field】 [0001] The invention relates to the technical field of medium and low temperature waste heat energy recovery of organic Rankine cycle power generation equipment, in particular to a leakage-proof organic working fluid turbine generator set. 【Background technique】 [0002] Organic Rankine Cycle (ORC) power generation technology has been applied in the utilization of industrial waste heat, geothermal energy, solar energy and ocean temperature difference energy. The low-boiling-point organic working fluid used in ORC power generation equipment is volatile and expensive, and no external leakage is allowed. Therefore, the sealing requirements for turbogenerator sets are very high. [0003] The turbine generator set of existing ORC power generation equipment usually adopts the unit structure of "turbine-gear reducer-generator", is equipped with a lubrication system, and uses a corresponding sealing structure to solve the problem of external leakage of the working ...

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Problems solved by technology

[0003] The turbine generator set of existing ORC power generation equipment usually adopts the unit structure of "turbine-gear reducer-generator", is equipped with a lubrication system, and uses a corresponding sealing structure to solve the problem of external leakage of the working medium. The structure of the sealing system is complex and the life expectancy Limited, expensive, and cannot completely prevent the leakage of the working medium

[0004] According to relevant domestic patents and technical documents, the existing integrated anti-leakage organic working fluid turbine generator set (application number: 201310492673.9) adopts magnetic suspension bearings, which do not require cooling and lubrication, but the cost of magnetic suspension bearings is high, and the cost recovery period of the unit is relatively long. Long, and the maturity of domestic magnetic suspension bearing technology is low, and it is rarely adopted by products in the industry

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